She told Access Hollywood: "I couldn't believe it was happening to me. I still can't believe I shot in South Africa and shot all my scenes with Jeff Bridges. It was unreal.

"Seriously, I couldn't believe I got to be a part of the experience. And I just tried to work as hard as I could and just throw myself into that environment as much as I possibly could and it was really long hours and it was a lot of preparation and getting into character and all that.

"But it was one of the most amazing experiences of my life. Honestly."

Swift has taken on acting roles before in Valentine's Day and New Girl but emphasised that this project has been "educational".

"I learned so much," she explained. "It's crazy how educational just getting into a situation and doing it [is].

"You learn so much more, because I have taken acting classes and read as much as I possibly can on it and done theater before all this started, [but] you learn more by actually doing it than you could ever learn in preparation."